RT Book, Section
A1 Wright, Robert Bruce
A1 Klassen, Terry
A2 Shah, Samir S.
SR Print(0)
ID 6905596
T1 Chapter 31. Croup
T2 Pediatric Practice: Infectious Disease
YR 2009
FD 2009
PB The McGraw-Hill Companies
PP New York, NY
SN 978-0-07-148924-9
LK accesspediatrics.mhmedical.com/content.aspx?aid=6905596
RD 2024/04/16
AB Croup  (acute  laryngotracheobronchitis)  is  a  respiratory  illness  of  childhood  and  one  of  the  most  common  causes  of  upper  airway  obstruction  in  children.  Physicians  should  be  comfortable  with  the  disease  as  it  will  be  one  of  the  most  frequent  presentations  of  acute  stridor  in  children  to  the  office  or  emergency  setting.  In  the  United  States,  it  is  estimated  to  affect  around  3%  of  the  population  and  is  most  common  in  children  aged  6  months  to  6  years  with  the  largest  number  of  cases  seen  in  those  between  1  and  2  years  of  age.1  Reinfection  and  recurrence  of  croup  is  common.  The  ratio  of  males  to  females  with  croup  is  1.43:1.1  There  are  two  seasonal  peaks  of  croup  in  North  America,  the  first  in  autumn  and  the  second  in  late  winter.1  Because  of  biennial  increases  in  viral  epidemics,  the  number  of  croup  cases  is  50%  higher  in  odd-numbered  years  when  compared  to  even-numbered  years.2